JPH0746134Y2 - Thermal insulation covering material for plant cultivation - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a heat insulation coating material for plant cultivation, which alleviates damage caused by frost damage and cold wind on a plant body during low temperature cultivation of vegetables and the like.

(Prior art and its problem) The conventional heat insulation covering material for plant cultivation is a mere non-woven fabric, and as shown in FIG.
Was coated as indicated by the dotted line in FIG. That is, it was sticky to the plant.

However, in this case, the foliage of the plant 1 and the non-woven fabric 2 come into contact with each other, and the dew condensation of the non-woven fabric 2 causes the foliage to become wet, which has a drawback that it is against the original protection such as freezing and damage to the foliage in winter. In order to prevent this, a fixed space may be provided between the plant 1 and the non-woven fabric 2, but this requires auxiliary materials such as supports and the work is troublesome.

In order to improve this, the applicant has a heat insulation covering material for plant cultivation using a folded-back nonwoven fabric 3 having a shape as shown in FIG. 8 in Japanese Patent Application No. 63-44896 and having air permeability and heat insulation. Proposed. This is a rectangular tunnel shape with a void that is folded back at regular intervals.

However, this tunnel has a problem in that it is difficult to maintain its shape retention when it is long and it touches the foliage of the plant.

An object of the present invention is to solve the above-mentioned problems, and to provide a heat-insulating covering material for plant cultivation, which is easy to install and easy to maintain shape retention.

(Means for Achieving the Object) In order to achieve the above-mentioned object, polyester and a breathable nonwoven fabric covering sheet 11 containing a thermoplastic plastic such as acrylic are first and parallel along parallel lines at regular intervals. Second folding curves 13 'and 13 "are alternately folded back in the opposite direction, and both folding curves 13 are formed into a long rectangular shape, and both ends of this rectangle are folded back in the opposite direction. And the second folding curve 13 ″ on the lower side is returned so as to form an isosceles right triangle having vertices on both folding curves 13 to form the closed portion 11 ′, and the first folding curve 13 ′ on the upper side The developed state holding means is provided at a plurality of positions including both ends.

The developed state holding means is constructed by welding a tape 12 containing a thermoplastic to the upper first folding curve 13 'at a constant interval, and the upper first folding curve 13'.
A through hole 14 is formed near the rope 15 and a rope 15 inserted into the through hole 14 and piles 16 tightly connected to both ends of the rope 15 respectively.
There are things that consist of and.

(Function) As described above, the entire tape is unrolled where necessary so that the tape does not slacken, and the unfolded state is maintained simply by fixing both ends of the tape, and a constant distance is maintained between the foliage of the plant to be kept warm. Is retained.

Further, in the case of using the rope instead of the tape, the expanded state is maintained only by expanding the rope, expanding the covering sheet, and fixing both ends to the rope or the ground.

(Embodiment) Embodiment 1 FIG. 1 is a perspective view of a developed state of this embodiment, FIG. 2 is a side view of the same when developed, FIG. 3 is a top view of the same, and FIG. 4 is a side view of when folded. Is.

The heat-insulating coating material for plant cultivation of the present invention comprises a coating sheet 11 and a tape 12 as a developed state holding means in this embodiment.

The covering sheet 11 is bent along a folding line 13 into a shape as shown in the developed view of FIG. That is, the first folding curve 13 'is bent at a right angle on both sides at a constant interval in the same direction, and the second folding curve 13' is bent in the opposite direction at the center of the interval of the first folding curve 13 '. It is configured so that the whole can be folded in a folding screen shape with the curve 13 ″, and further has the apex on both ends of the second folding curve 13 ″ (both sides of the covering sheet 11) and the first folding curve 13 ′. Curve 1
The extended portion of the first folding curve 13 'is set to the second folding curve 13 "so as to form a right-angled isosceles triangle having a right-angled vertex at the intersection of the extension lines of 3'with both sides of the covering sheet 11, and the second folding line is formed. Curve 1
Bend so that the hypotenuse part between both ends of 3 "and each vertex on the first folding curve 13 'becomes the first folding curve 13', and the closed portions 11 'at both ends
Make up. In the figure, the solid line fold curve 13 is bent so that it is on the upper side (so that both sides of the fold curve 13 move to the back side of the figure) to form the first fold curve 13 ', and the broken line fold curve 13 is the above-mentioned first line. The second folding curve 13 ″ is formed by bending the first folding curve 13 ′ in the opposite direction.

In the state where the cover sheet 11 bent in this way is developed into a predetermined shape, the tape 12 is welded to a plurality of places including both ends of the upper first folding curve 13 '.

Next, the operation (usage method) of this covering material will be described. If the tape 12 of the above-mentioned covering material is spread at the required position where the plant is planted and both ends of the tape 12 are fixed to the ground by an appropriate method, the covering sheet 11 will be in a predetermined developed state. FIG. 1 (perspective view), FIG. 2 (side view), and FIG. 3 (top view) show this state.

Further, when not in use, it can be folded as shown in FIG. 4 (side view), and a large space is not required for storage.

Example 2 This example is different from Example 1 described above in the expanded state holding means, and the cover sheet 11 is in the same bent state. Therefore, only the expanded state holding means will be described.

As shown in the perspective view of FIG.
Through holes 14 are formed in a plurality of places including both ends in the vicinity of the upper first bending curve 13 '. A rope 15 is inserted through the through hole 14, and both ends of the rope 15 are fastened to a fixing member such as a pile 16.

Next, the usage in the case of this embodiment will be described.

A fixing member such as a pile 16 is driven into the ground at both ends of the place where the covering sheet 11 is to be deployed, and a rope 15 inserted into the through hole 14 of the covering sheet 11 is stretched and tightened on the fixing member.

After that, the covering sheet 11 is expanded, and both ends of the covering sheet 11 are fixed to the ground with piles or the like to maintain the expanded state.

(Effect of the invention) As described above, the covering sheet 11 is held in the expanded state by the tape 12 or the rope 15 which is fixed at both ends by the piles 16 or the like and is stretched, so that the covering sheet 11 does not directly contact the foliage of the plant.
It is possible to prevent frost damage on the foliage.

Further, in the case of the covering sheet 11 to which the tape 12 is welded, the covering sheet 11 can be unfolded at the same time only by spreading the tape 12, and the unfolding operation is simple.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a heat insulation covering material for plant cultivation of the present invention in a developed state, FIG. 2 is a side view of the same, FIG. 3 is a top view of the same, and FIG. 4 is a side view of a folded state. FIG. 5 is a developed view of the covering sheet, FIG. 6 is a perspective view of a developed state of another embodiment, FIG. 7 is a usage state diagram of a conventional covering material, and FIG. 8 is a conventional improved covering. It is a perspective view of the development state of a material. 11: Cover sheet, 11 ′: Closure, 12: Tape, 13: Folding curve, 13 ′: First folding curve, 13 ″: Second folding curve, 14: Through hole, 15: Rope, 16: Pile.

Claims (3)

[Scope of utility model registration request] 1. A cover sheet of a breathable non-woven fabric containing a thermoplastic plastic such as polyester or acrylic is alternately folded back in opposite directions along first and second folding curves along parallel lines at regular intervals. An isosceles right triangle having an apex on each of the upper first folding curve and the second lower folding curve obtained by folding both ends of the rectangle in the opposite direction and having an elongated rectangular shape having long sides. A heat-insulating covering material for plant cultivation, characterized in that it is folded back to form a closed portion, and a developed state holding means is provided at a plurality of positions including both ends of the upper first folding curve. 2. The heat insulation coating for plant cultivation according to claim 1, wherein the expanded state holding means is formed by welding a tape containing thermoplastic plastic to the upper first folding curve at a constant interval. Materials. 3. The unfolded state holding means comprises a through hole formed in the vicinity of the upper first folding curve, a rope inserted through the through hole, and a pile tightly connected to both ends of the rope. A heat insulating covering material for plant cultivation according to item 1.